Adelaide to Seattle Time Difference
🇦🇺 Adelaide is currently 17.5 hours behind of 🇺🇸 Seattle. This difference varies between 18.5h and 16.5h due to Daylight Saving Time.
Live Calculator
Atin 🇦🇺 Adelaide→it will be—in 🇺🇸 Seattle
Open full calculator →DST-accurate · shareable link
Difference
-17.5h
Business overlap
2h
Distance
13,417 km
Approx. flight
15.8h
Hour-by-Hour: Adelaide to Seattle
| 🇦🇺 Adelaide | 🇺🇸 Seattle | Note |
|---|---|---|
| 12:00 AM | 6:30 AM | |
| 1:00 AM | 7:30 AM | |
| 2:00 AM | 8:30 AM | |
| 3:00 AM | 9:30 AM | |
| 4:00 AM | 10:30 AM | |
| 5:00 AM | 11:30 AM | |
| 6:00 AM | 12:30 PM | |
| 7:00 AM | 1:30 PM | |
| 8:00 AM | 2:30 PM | |
| 9:00 AM | 3:30 PM | |
| 10:00 AM | 4:30 PM | |
| 11:00 AM | 5:30 PM | |
| 12:00 PM | 6:30 PM | |
| 1:00 PM | 7:30 PM | |
| 2:00 PM | 8:30 PM | |
| 3:00 PM | 9:30 PM | |
| 4:00 PM | 10:30 PM | |
| 5:00 PM | 11:30 PM | |
| 6:00 PM | 12:30 AM(next day) | Next day |
| 7:00 PM | 1:30 AM(next day) | Next day |
| 8:00 PM | 2:30 AM(next day) | Next day |
| 9:00 PM | 3:30 AM(next day) | Next day |
| 10:00 PM | 4:30 AM(next day) | Next day |
| 11:00 PM | 5:30 AM(next day) | Next day |
Daylight Saving Time (DST)
Both Adelaide and Seattle observe Daylight Saving Time, but they may switch on different dates. The time difference varies between 18.5 hours behind and 16.5 hours behind throughout the year. Currently, Adelaide is 17.5 hours behind relative to Seattle.
Min difference
18.5h
Max difference
16.5h
Best Meeting Times
There are 2 overlapping business hours between Adelaide and Seattle (9 AM – 6 PM in each city).
🇦🇺 Adelaide
9:00 AM – 11:00 AM
🇺🇸 Seattle
3:30 PM – 5:30 PM
Frequently Asked Questions
What is the time difference between Adelaide and Seattle?
The time difference between Adelaide and Seattle is currently 17.5 hours behind. Adelaide uses GMT+10:30 (UTC+10:30), while Seattle uses PDT (UTC-7). This difference varies seasonally due to Daylight Saving Time, ranging from 18.5 hours behind to 16.5 hours behind.
When it's noon in Adelaide, what time is it in Seattle?
When it's 12:00 PM (noon) in Adelaide, it is 6:30 PM in Seattle. Use our calculator above to convert any other time.
Does the time difference between Adelaide and Seattle change?
Yes, the time difference changes throughout the year. Because Adelaide observes Daylight Saving Time, the offset shifts between 18.5 hours behind and 16.5 hours behind at different times of the year.
What are the best times to schedule a call between Adelaide and Seattle?
The best time to call is between 9:00 AM and 11:00 AM in Adelaide (which is 3:30 PM – 5:30 PM in Seattle). This 2-hour window falls within business hours in both cities.
Is Adelaide ahead or behind Seattle?
Adelaide is currently 17.5 hours ahead of Seattle.
What time zone is Adelaide in?
Adelaide is in the Australia/Adelaide time zone, currently using GMT+10:30 (UTC+10:30). Adelaide observes Daylight Saving Time, so the offset changes twice a year.
What time is midnight in Adelaide in Seattle?
When it is midnight (12:00 AM) in Adelaide, it is 6:30 AM in Seattle.